Scientific exploration.

Exploring in Life
1.
Movement of the Earth and Moon
1 Changes in the positions of the sun and moon during a day
2 Why the positions of the sun and moon change during the day
3 Why day and night occur
4 representative constellations for each season
5 Why the constellations you see change with the seasons
6 Changes in the shape and position of the moon over several days
Unit Summary, Unit End Problems

2.
Various gases
1 Properties of oxygen
2 Properties of carbon dioxide
3 Changes in gas volume according to pressure
4 Changes in gas volume with temperature
5 Various gases that make up air
Unit Summary, Unit End Problems

3.
Structure and function of plants
1 Cells that make up living things
2 The appearance and function of roots
3. Appearance and function of the stem
4 The shape and function of leaves
5 Movement of water reaching the leaves
6 The appearance and function of flowers
7 How seeds spread
Unit Summary, Unit End Problems

4.
Light and Lens
1. Sunlight passing through a prism
2 Light passing through water and glass
3 Appearance of objects in water
4 Characteristics of convex lenses and the appearance of objects seen through convex lenses
5. Sunlight passing through a convex lens
6. The appearance of an object observed by making a tool using a convex lens
7 Examples of using convex lenses in our daily lives

『O2』 is a science textbook that provides vivid examples of actual experiments and observations.
『O2』 Elementary Science has included all the important content from the new 9 types of approved science textbooks, and has explained the content in a friendly way so that even students can understand it on their own.

The stages are organized so that you can study concepts and problems step by step, and the assessment booklet allows you to perfectly prepare for review and academic achievement assessments, thereby increasing your confidence in science.